Dish-washer.



W. R. WALKER. lDISH WASHER.

APPLICATION FILED MAY 3l, 1911.

Patented Aug". 19, 1913.

' s SHEETS-SHEET 1.

Wim/55.5.5.3

W. R. WALKER.

DISH WASHER.

APPLIOATION FILED MAY 31. 1911.

Patented Aug. 19, 1913.

3 SHEETS-SHEET 2.

VV/ TNESSES W. R. WALKER.

DISH WASHER.

APPLIOATION FILED MAY 31, 19u.

Patented Aug'. 19, 1913.

3 SHEETS-SHEET 3.

/N VEA/Ton @am @fm lTiri) STATES PATEN E, @F SYMG'USE, N Y0@ Specification of Letters Patent. Fatt imag, jtglgjl, Applicativi. area my si, ieri. serial at. este.

'To all 'whom t'imay concern:

WmLAnn R. Wannen, of Ononda a, 1n' new Be it known that of Syracuse in the county the State of New York, ave invente [and useful improvements in Dish-Washers,

of' which the following, taken in' connection with the accompanying drawings, 1s a full, clear, and'eXact descrlption. i

'llhis invention relates to certain' improvements in dish washers of the class set forth in the patents to Leonard and Hescox #607,515', July 19, 1898' and Hescox #860,80, duly 23, 1907 in which .the dishes to be washed' are placed in or 'upon suitable cages or skeleton supports within a closed receptacle having an inverted comcalbottom containing a limited quantity of water which is intermittingly dashed upwardly against the superrlosed dishes by means o f a recproeatory con cal dasher coacting wlth the conical bottom of the receptacle.

lln both of the atents mentioned', the dasher is made in the form of an inverted cone of substantially the same angle as the .bottom ot the receptacle with which it is and is provided with per`-.

adapted to coact forations arranged around the axis oi' its operating projected upwardly in jets upon the descent ot the dasher by means ot a spring after such d'asher has been elevated through the medium of suitable hand-operated mechanism. The perforations in the portions of each of these patents are disposed at substantially right angles to the upwardly flaring sides, thereby directing the water in upwardly converging jets or toward the produced axis of the dasher while an additional quantity of Water is forced by impact between the dasher and conical bottom of the receptacle upwardly and outwardly around the edges of the dash-er, thus leaving a considerable intervening space where the water does not reach at least with sufficient force l the dishes and other articles which' may be y f nism shown in Fig. 10 showing particularly supported in or upon the cage around the produced axis of the dasher. ln other rodand through which the water is spectively a top plan l tion of a dish washer embodying the various features of my invention, r supporting legs being broken words lthave sought to distribute the upwardIy projected jets or streams of water more' evenly across the entire interior area of the'receptacle than is possible in the machine set forth in the atents referred to so that any dishes or ot er articles placed in or upon the cage' will lie in the ath of at least some portion of the upward y project- -ed' streams or jets.

The force with which vthe jets or streams are projected upwardly from the bottom of the receptacle against the su erposed dishes or other articles to be washe depends somewhat u on the rapidity and ower of descent o the dasher land anot er object of my invention is to provide simple actuating mechanisms whereby the dasher may be elevated with a minimum degree of power and depressedv after each elevationwith a maximum. velocity and power by a minimum degree of movement of its actuatingmotor as the driving element continues to rotate in the same direction. j e

Other objects and uses relating to specific parts of the the following description.

ln the drawings-Figures l and 2 are reand a front elevaa portion of the away in Fig.

',2. Fig. 3 is an enlarged transverse ver- ;tical sectional view of the main portion of ythe machine shown in Figs. l and 2 showing the dasher and its in its normal' positlon of rest, a

tion. Fig.' 4 is an enlarged top Iportion of the actuating mechanism portion of the main receptacle being shown in elevaplan of a 1s a similar dasber. Fig. 5

,plan of the central bottom plate of the re- ;ceptacle. Fig. 6 is an enlarged top plan of "the spring motor and adjacent portion of its tensioning mechanism. Figs. 7 and 8 l detail sectional are transverse sectional views through the spring motor taken respectively on lines 7-7 and: 8 8, Fig. 6. Fig. 9 is an enlarged view through the supporting head for one end of the spring motor taken on lines 94-9 Fig. 6. Fig. l0 is an enlarged vertical sectional View of the driving mechanismfor elevating the dasher and tensioning the motor, taken on line .lO- 10 Fig. 2. Fig.

l1 is an enlarged elevation partly in section of a portion of the driving mecha- 1the rclutch connection between the driving device will be brought out in A gear and crank arm taken `on line 11-I-11 hereinafter described and open at the bot tom to. permit the dasher to be operated therein and is provided with a circular series of upwardly projecting guard arms -4- spaced equi-distant apart from each other .and from the periphery of the dome -3- to retain plates and other dishes which may Vrest upon the marginal upper face of the base section -2-. The top of the base section -2- also forms the bottom of the dome -3- into which additional dishes or other articles to be washed may be placed with their lower edges resting on said bottom. The base -2- and dome portion -3-1are rigidly united to each other and are provided with radially projecting arms -5. extending some distance beyond the periphery of the base -2- and rigidly connected to each other by circular rings -6-.

The en tire cage is adapted to be inserted into and removed from a receptacle 7- and for this purpose is provided with diametrically opposite handles or. wire loops -8- by which it may be lowered and raised into and out of the receptacle or carried from place to place as may be desired, the extreme diameter of the cage being substantially equal to the interior diameter of thel receptacle which, in this instance, is cylindrical and provided with a cover -9-.

By making the cage separate from the receptacle it may be taken out and 'brought to the place where the dishes and other articles are collected so that the latter may be placed therein and the entire cage may then be carried to and placed within the rece tacle. This receptacle is adapted to retain a quantity of water and is provided withreversely tapered conical bottom portions -10- and -11, the portion 10- constituting the main body of the bottom with its apex lowermost, while the conical portion -11 is arranged centrally of the bottom portion -10-- with its apex uppermost and preferably forms a part of a cast metal plate 12- having an annular channel -l3- surrounding the conical portion ll- The main body of the receptacle 7- including the greater portion of the'conical bottom -10- is preferably made of sheet metal -with a central opening in its apex covered v,by the plate 124- and in order to produce a water tight joint between the metal plate and vinner "edges of the sheet metal bottom portion -2-, the marginal edges of said plate are provided with an upturned annular flange -1& disposed at an angle w1th the adjacent portion of the bot-A tom -10- while the inner marginal edges of said bottom portion -10- are also de- :He'ctcd downwardly at the4 inside of and parallel with the flanges 44; forming an inner marginal I ilange` 15- which is clamped firmly against the inner face of the marginal flange n14- b means of a clamping ring 16u and suitable bolts ,-17. This clamping ring 16- lies upon the upper face of the plate --12- between the annular groove 13 and flange ,-14- and its outer edge is beveled to conform to the angle of said flange so as to firmly impinge the inner marginal edge 15- of the sheetv central aperture and stuffing box or gland -22 in which is guided a vertically movable plunger rod -28 carrying at its upper end a dasher -Slet- This dasher is adapted to coact with the conical portions -10- and -11- by downward impact against the water in said receptacle to force such water upwardly into andl around the cage -1- in contact with the dishes or other articles thereon and for this purpose is provided with an upwardly flaring or main conical portion -26- having its apex lowermost and a central conica-l portion Q7-shaving its apex uppermost, said central conical portion being provided with radially elongated slots or openings -28- spaced uniform distances apart circumferentially and adapted to register with the underlying portion-. llin the bottom of the main receptacle -7-.

The angles or flare of the conical portions stantially the same as those of the corresponding conical portions -10- and l1- of the bottom of the receptacle -7- so as to establish a more or less close fit therewith although adapted to. be held a slight distance therefrom when the dasher is heldin its extreme low down position by means of a rubber buffer or shock absorber --29 coacting with a stop shoulder -30- onthe ioo plunger #2B- as best seenin Fig. 1''. 'lhis uiier or shock absorber mounted 'in an 'apertured `liub --31- which forms a guide for lthe :lower end of the plunger 423eand isrigidly connected by `arms -'-32- to the un' erside 'of the plate -j12 'or bottonof the receptacle -7=-.

f`iBy providing the' 'upwardly converging sides-of the central cone 27ofthe dasher with perforat-ions relatively located 'in' the manner described;v it is evident that when Water is present in 'tlfebottom of 4the recepe tacle and the dasher lis driven "downward with considerable force, .the water impinged between :the meetin :faces 'of the cones -11- and 27- wlll bedorcibly projected upwardly into and ythrough the Vplates and against the dishes or other Aarticles therein in diverging jets or upwardly and outwardly from ythe produced 'aXis of 'the dasher, while the water between the conical portions '10 and Q6 ofthe receptacle and dasher respectively will `be also forced upwardly and outwardly ithrough' the outer potio'nsothe cage to contact with any dishes or other articles .which 'may be -mounted therein, thereby. forcibly .driving asl the 'water upwardly and outwardly itroim 'the axis ofthe dasher through' all -portions of'the.

cage and over practically the entire area `of the interior of the -receptaclewhere the* dishes or other articles to be washed are placed.

The top --9- of"the receptacle which is removable to permit 'theinsertion and ren moval of the cage'ordishes is also conical with its apex uppermost 'Sothat the j'water which is driven upwardly and outwardly by the downward movement ofthe dasher imupwardly converging water inwardly toward the center and allowing it to gravitate upon and across the dishes or other articles'in the cage. i In this manner the'dishes are washed by the upward projection ofthe water and also bythe return iow and the operation may be repeatedl as often as may bedesired vto eiiect a thorough cleansing of the dishes of `other articles.

Dasher operating mechanism-'Mounted upon and secured to the front side of :the receptacle -7- -s a gear case -38- in which i's rev'olubly mounted an internal gear -39- and a pinion 4G- the latter being adapted -to be operated by any suitable driving power as ahand crank `4&1 secured to the'outer end of a pinion shaft -'42-. r1`he gear B9- is rotated upon a suitable stud -43- on the gear case -38- and is provided with a clutch section #-411- coacting with a companion clutch section L15- on a crank arm -46-- which is loosely mounted on the stud -43- and adapted to be locked to the clutchsection -44- by 'means of one or more rollers -47 as shown 'inl Figs.` --10' and --11-. llhe outer lendet the-crank arm 46 is connected by 'ailink -448- and'ball and socket joint v'-4f9- .'to one/end of a lever S50-- which is'fuicrume'd or pivotally supported upon -a swinging support --51,`=the` latter being pivot'ed to a bracket #$52- projecting radially from 'the underside of lthe bottom 'of the 'receptacle JZ-as best 'seen in Fig. 3. The 'opposite "end "of the lever -50- is pivotally connected to the Vintermediate portion of 'the plunger rod Q3-between the guide 31 and gland -'22 for imparting reciproeatory 'motion tothe 'dasher *124- l'in va manner presently described. The Vclutch section 44.- .prejferably consi'st's'of` a circularg disk lformed integral with the 'gear B9- and provided with a'plurality of vvrecesses -55- opening from its periphery and spaced a uniform distance apart circumferentially to receive a corresponding number of roller clutch members #47H of subst-antiallythe same or :slightly less diameter (than the recesses -55- in which they are movable. The companion clutch member w445- preferably consists'ot a hollow hub -formed'integralwiththe crank arm *4band .provided with a plurality of, 'in 1xthis instance three, eccentric lrecesses -58- forming tangential bearings -59- and Asubstantially radial `stop shoulders @ne ormore of the. recesses -58- is or :are located in afplaneor .planes below the axis of the clutch disk 44- sothat as the rollers are'carried to'corresponding planes by the rotation of said fdisk,they will gravitate into said recesses 58 and 'therebylock `'the-fdisk to tthe 4crank arm as the disk is rotated in one direction, as for example, tothe right of Fig. 11, at the same time permitting the crank arm to be rotated in the same direction independent-ly of the disk. rThe object of this particular form of clutch connection is to permit 'thedasher to be elevated toits extreme up position by means of the hand crank 4land intervening connections and also to permit the dasher `to 4be returned to its starting or extreme down position with considerable torce and velocity by means of `spiral spring motors -61- as best seen vin Figs. 3, 6, 7 and S. rlhese spring motors 6lare mounted in a horizontal position parallel with each other upon suitable supporting rods -62- equidistant from and at opposite sides of the lever -50- with their trout and rear ends secured to suitable collars #63- and G4- which are loose upon the shafts or rods .-62--. rlhese springs are adapted -to be tensioned from both ends simultaneously and gradually as the dasher is raised to its extreme up position and for this purpose the collars v63 are provided with inwardly projecting crank arms -65- both of which are connected by links -66- and a yoke 6l-to the front arm of the lever -50- as shown in Fig. 8, while the rear collars -64-- are rovided with separate crank arms -69- aving t-heir inner ends bearing against'the upper sides of the rear end of the lever -50-. In order to produce this double tensioning of the spring motor -61- by the reverse movement of opposite ends of the lever -51-, said spring motors are reversely coiled upon their respective shafts --62- so that by connecting the crank arms 611- and -69- to the lever -50-- in t-he manner described, the springs always exert a downward pressure or pull upon the dasher 24:- tending to hold it in its eXtreme downward position as shown in Fig. 3 thereby, holding the outer or front end of the lever 5G- and crank arm -46- connected thereto in their eX- treme upward positions as'shown in Figs. 3, l0 and 1l with one or more of the rollers 47- in position to lock the gear -39- to the, crank arm The tension ofthe LTprings -61- may be adjusted at will to operate the dasher downwardly with desired velocity and force and for this purpose each of the.-` levers G5- is mounted for independent"l rotary movement upon the collar 6B-which is provided with a series of radial ,apertures -w80- for receiving a pin or stud 81- which is passed through and engages one end of one or more slots or recesses S2- in the hub of each lever '65-5'-, the slot or slots 82- being madesufliciently long to extend beyond two or more of the apertures 80- so as to permit the insertion of a suitable tool into one of the apertures #80- to hold and turn the collar 63- While the pin 8lis being withdrawn and reinserted in another aperture, whereupon such tool may be removed which permits the spring to rock the collar G3- until stopped by the engagement of the pin --81- with the end of the recesses -82--. This operation may be repeated as often as may be necessary to produce the desired tension ofthe springs.

It is now evident that by rotating the hand crank -41- and pinion -40- connected thereto in the direction indicated by arrow X, Fig. 2, the gear -39- and crank arm -46 will be rotated in the same direction thereby depressing the outer end of the lever -50- and elevating the dasher against the action of the retractingsprings or motor -61- until the crank arm -46- has been moved from an arc of substantially 180o or to a position diametrically opposite to that shown in Figs. 10 and 11, whereupon as soon as the crank arm passes the center on the half turn, its rotary motion will be continued through the other half turn independently of the hand crank 4in1-"- and gears bylmeans of -the spring motors -61--v thus depressing the dasher 2liwith considerable velocity and power into the water in the bottom of thereceptacle. This downward movement of the dasher and consequent' impact with the water causes such water to be forced upwardly and out-- wardly through the cage and against the dishes or other articles therein with great velocity, thereby effectively cleansing such articles which cleansing is further aided by the gravity return of the water to the bot.- tom. of the tank, this operation being repeat/ed as often as may be necessary to produce a thorough cleansing of the artlcles which may be placed within the cage.

In operation the soiled dishes are properly distributed in and upon the tray or cage either before or after the latter has been placed in the vat or water retaining receptacle and owing to the factv that 'it is unnecessary to handle any dishes or other articles durin the washing operation, it is evident thatoiling hot water may be used either in the initial or iinal operation of washing or cleansing the dishes and that when two or moreof the washin machines are available, as, for example, in otels and other public dining rooms where a large number of dishes are to be washedseveral times a day, the cages with the partially washed dishes thereon may be taken out of one machine and subjected to the action of cleaning water in another machine, whereu on the finally cleansed dishes may be left 1n the tray and allowed to drain dry either in the machine or by withdrawing the tray or cage therefrom and setting it one side.

The operation of the machine has now been set forth in such full, exact and clear terms as to enable anyone skilled in the art to make and use the same and although I have shown a specific form of receptacle and dish supporting cage or tray, I do not wish to be limited to such forms nor to the exact details of the other mechanisms for operating the dasher.

What I claim is:

1. In a dish washing machine, awater conof the dasher therewith.

' portion and provided with an outlet in one 3. In a dish washing machine, a water containing receptacle, a reciprocator dasher movable centrally therein and provided with outer and inner conical portions flaring in opposite directions, the inner conical portion being provided with apertures therethrough. f

4. In a dish washing machine, a water containing receptacle having its bottom provided with a central raised portion and an annular channel surrounding said raised portion, said channel having'an outlet, the raised portion being provided with a central shaft opening, a shaft in said opening and a dasher secured to the shaft within the receptacle, and means for operating the shaft.

5. In a dishV washing machine, a water containin receptacle having its bottom provided wit a central raised conical portion and an annular channel surrounding said raisedportion, said channel being provided with an outlet, a vertically movable dasher having a central .conical portion coperating with the raise-d central portion of the bottom of the receptacle, and means for reciprocating the dasher.

6. In a dish Vwashing machine, awater containing receptacle'having its bottom provided with a raised central portion and an annular channel surrounding said raised side, the remaining portions of the channel declining toward the outlet, a dasher movable in the receptacle and having a raised central portion coperating with the raised portion of the bottom of the receptacle to dash the water upwardly therethrough.

7. In a dish washing machine, awater containing receptacle having its bottom provided with a raised conical central portion andan annular channel surrounding said raised portion, the` remaining portions of the bottom flarin upwardly through the outer side ofthe c annel, said channel having an outlet in one side,a shaft movable vertically in a central aperture in the raised portion'of the bottom, and a dasher secured to the upper end of the shaft within the receptacle. l

8. In a dish washing machine, a water containing receptacle having reversely tapered conical bottom portions and an annular channel between said conical portions, and a reciprocatorydasher having reversely tapered conical portions conforming to those of the receptacle, and means for operating the dasher, said channelbeing provided with an outlet in one side. v

In witness whereof I yhave hereunto set my hand on this 12th day of May 1911.

WILLARD It. WALKER. v

Witnessesz. Y

I-I. E. CHASE, E. F. SPEAKING. 

